Schedule of Derivatives Designated as Hedging Instruments (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Dec. 30, 2012	Apr. 01, 2012
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized In Income	$ (0.1)		$ 0.5
Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Notional Amount	306.6	274.2
Fair Value	2.2	7.0
Amount of Gain (Loss) Recognized In AOCI	2.2	7.0
Amount of Gain (Loss) Recognized In Income	1.5		0.7
Amount of Gain (Loss) Reclassified from AOCI	1.5		0.7
Designated as Hedging Instrument | Revenue | Foreign Currency Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized In Income			0.5
Amount of Gain (Loss) Reclassified from AOCI			0.5
Designated as Hedging Instrument | Expenses | Foreign Currency Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized In Income	1.5		0.2
Amount of Gain (Loss) Reclassified from AOCI	1.5		0.2
Designated as Hedging Instrument | Derivatives For Forecasted Revenues | Current Assets
Derivative Instruments, Gain (Loss) [Line Items]
Notional Amount	89.5	6.4
Fair Value	0.7	0.3
Amount of Gain (Loss) Recognized In AOCI	0.7	0.3
Designated as Hedging Instrument | Derivatives For Forecasted Revenues | Current Liabilities
Derivative Instruments, Gain (Loss) [Line Items]
Notional Amount		51.7
Fair Value		(0.9)
Amount of Gain (Loss) Recognized In AOCI		(0.9)
Designated as Hedging Instrument | Derivatives For Forecasted Expenses | Current Assets
Derivative Instruments, Gain (Loss) [Line Items]
Notional Amount	211.6	213.3
Fair Value	1.6	7.6
Amount of Gain (Loss) Recognized In AOCI	1.6	7.6
Designated as Hedging Instrument | Derivatives For Forecasted Expenses | Current Liabilities
Derivative Instruments, Gain (Loss) [Line Items]
Notional Amount	5.5	2.8
Fair Value	(0.1)
Amount of Gain (Loss) Recognized In AOCI	$ (0.1)